Odpowiedzi

2010-01-16T20:14:25+01:00
P=31u
O=16u
2*P+ 8*O= 2*31+8*16=62+128=190

262-190=72

72/3=24

24u wazy Mg
1 5 1
2010-01-16T21:03:34+01:00
(31+16*4)*2+3X=262
190+3X=262
X= 24

X to magnez (Mg)